Error Timed out waiting for XPC response - Urgent

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We are getting this error when we want to convert our files:

The file SA0566 is a XAVC file/MXF.

An error occurred converting Final Cut XML to AAF

Writing AAF file
Adding assets to AAF file
Adding essence for asset [SA0566] to AAF file
Adding essence data to AAF file for portion 0 of asset [SA0566]
Reading audio data from audio extractor : 174762 samples
Failed to read 174762 samples
Error Timed out waiting for XPC response

Suggestion: Check Console for errors.

No AAF file has been generated.
X2Pro Audio Convert 3.0.5

The FCPXML (attach it to your forum post) - 10.2.1
The version of FCP X that you are using - 10.2.1
The version of OS X that you are using - OS X Yosemite 10.10.5
Whether you have the "Trim embedded audio" option selected - Tried both with and without
What duration you have the "Trim handles" set to in the preferences - Tried 3 and 6 sec.

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